US2882375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistor constructions
Assignee: BOURNS LAB Inc
•
Filing: 1954-07-26
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Granted: 1959-04-14
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Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Marlan E Bourns
- 👤 Wilbur T Hardison
- 👤 Warren D Hulbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1955906A
Cited
US2229072A
Cited
GB588558A
Cited
US2523896A
Cited
GB668186A
Cited
BE519314A
Cited
US2687463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |